Go Back   Pro/Forums > ProCooling Technical Discussions > General Liquid/Water Cooling Discussion
Password
Register FAQ Members List Calendar Chat

General Liquid/Water Cooling Discussion For discussion about Full Cooling System kits, or general cooling topics. Keep specific cooling items like pumps, radiators, etc... in their specific forums.

Reply
Thread Tools
Unread 11-30-2002, 07:54 AM   #26
Volenti
Cooling Savant
 
Volenti's Avatar
 
Join Date: Jan 2002
Location: in a nice cool spot
Posts: 427
Default

Quote:
Originally posted by MadDogMe
EXCELLENT!! ...

Did you try cutting a slot/line halfway through the rubber valves yet?, at the 'hinge point/line'?, that would let them bend easier...

why does the water inside look like milk(white) in the pic?, I've seen this effect before, but only half of the water in 'that' pic looked white, stripey water!, strange ...
there's no water in it yet, that's the temporary sealant I've used while I test the setup.

also the performance is even better than I initally thought, when I first assembled it I had alignment problems that would cause some of the impellers to jam, well after I thought I had fixed that I did that head test, it turned out that the pump at the intake end had jammed again!, so it was doing 2.5m head with only 2 pumps going!

I got all 3 pumps going and ran out of ceiling, lol, (I have 2.6m ceilings) I'll have to test it outside in the morning, it looks like it should be about 3m or so.

I havn't addressed the valves yet, but they will get looked at when I do some more in depth testing.
__________________
feel free to icq/msn me, I'm always willing to toss around ideas.
Volenti is offline   Reply With Quote
Unread 11-30-2002, 02:20 PM   #27
nicozeg
Cooling Savant
 
nicozeg's Avatar
 
Join Date: Sep 2002
Location: Santiago, Chile
Posts: 403

Wow Volenti, your results are impressive!!!

I consider your pump mods saga to be one of the "greatest invenions for the DIY". It desserves to be on a permanent place in the site for future reference.

I see the title for your bidirectional pump mod shining on the main procooling page:

"UNCOVERING YOUR HIDDEN PUMP POWER" by Volenti
nicozeg is offline   Reply With Quote
Unread 11-30-2002, 08:02 PM   #28
Volenti
Cooling Savant
 
Volenti's Avatar
 
Join Date: Jan 2002
Location: in a nice cool spot
Posts: 427
Default

Well I must say I'm pretty happy

here's the head test setup showing the max head (all 3 pumps going)



results;
3 pumps - 3.4m head
2 pumps - 2.3m head
1 pump - 1.2m head

in-system flow rate tests to come.
__________________
feel free to icq/msn me, I'm always willing to toss around ideas.
Volenti is offline   Reply With Quote
Unread 12-01-2002, 12:39 AM   #29
The Spyder
Cooling Neophyte
 
Join Date: Aug 2002
Location: Oregon-
Posts: 43
Default

OH man thats a SWEET setup~ whats the GPH at the 3.4M head?
__________________
So.... how ya doing?
The Spyder is offline   Reply With Quote
Unread 12-01-2002, 01:45 AM   #30
Volenti
Cooling Savant
 
Volenti's Avatar
 
Join Date: Jan 2002
Location: in a nice cool spot
Posts: 427
Default

Quote:
Originally posted by The Spyder
OH man thats a SWEET setup~ whats the GPH at the 3.4M head?
0

it's simply a measure of the maximum pressure the pump can achieve. It's the same with most other commercial pumps, unless they say something like "350GPH@2.5m head" then they are talking about the max head that the pump can achieve, there's no actual water flow at that point.
__________________
feel free to icq/msn me, I'm always willing to toss around ideas.
Volenti is offline   Reply With Quote
Unread 12-01-2002, 02:15 AM   #31
DarkEdge
Cooling Savant
 
DarkEdge's Avatar
 
Join Date: Mar 2001
Location: Sugar Land, Tx
Posts: 176

I wish I had the ability to do something like that.
__________________
Intel p4 2.26@3.0
Abit BD7II-Raid,1gb Corsair 3200
ATI Radeon 9700
3 80gb Seagates
3 40gb Maxtors
DarkEdge is offline   Reply With Quote
Unread 12-01-2002, 02:17 AM   #32
Skulemate
Cooling Savant
 
Skulemate's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 381
Default

Quote:
Originally posted by nicozeg
I consider your pump mods saga to be one of the "greatest invenions for the DIY". It desserves to be on a permanent place in the site for future reference.
I think that's perhaps a bit much. With all due respect to Volenti's work (don't get me wrong, I love much of his work, especially his direct die stuff) he's really only reworking the set-up to correct some of the design compromises that were made in the construction of the pond pumps he's using. A simpler (and likely more expensive) approach would be to use pumps that are already optimized for impellor rotation in only one direction.
__________________
Michael E. Robbins
M.A.Sc. Candidate, University of Toronto

12.1 GHz of AMD's finest (17.7 GHz total) crunching proudly for the AMDMB.com Killer Frogs
SETI BOINC: Dual Opteron 246s (Iwill DK8N) | XP2800+ (Shuttle SN41G2) | 3x XP2400+ (ASUS A7N266-vm)
SETI BOINC: 2x P4 2.8E (ASUS P4R800-vm) | Crunching 24/7
Skulemate is offline   Reply With Quote
Unread 12-01-2002, 04:16 AM   #33
MadDogMe
Thermophile
 
MadDogMe's Avatar
 
Join Date: Aug 2002
Location: Just shut up ;) ...
Posts: 1,068
Default

It's the cost difference between them though is'nt it?. 1 Iwaki20RZT will cost me £165 in the UK, I could mod two1250 Eheims an run them parallel for under £90!. three of them would surpass the Iwaki for £135!. It's not just the headmod either, it's the triparallel mod too...

Plus no~one has done it before ...
MadDogMe is offline   Reply With Quote
Unread 12-01-2002, 08:59 AM   #34
nicozeg
Cooling Savant
 
nicozeg's Avatar
 
Join Date: Sep 2002
Location: Santiago, Chile
Posts: 403
Default

Quote:
Originally posted by Skulemate
I think that's perhaps a bit much. With all due respect to Volenti's work (don't get me wrong, I love much of his work, especially his direct die stuff) he's really only reworking the set-up to correct some of the design compromises that were made in the construction of the pond pumps he's using. A simpler (and likely more expensive) approach would be to use pumps that are already optimized for impellor rotation in only one direction.
Well I know it's an exaggeration, but the point is that it reflects true overclocking spirit: not sticking with manufacturer assigned performance, but seeking the limits of any hardware. It sure could be a good candidate at Pro/Geeks.
nicozeg is offline   Reply With Quote
Unread 12-02-2002, 12:01 AM   #35
Skulemate
Cooling Savant
 
Skulemate's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 381
Default

Quote:
Originally posted by MadDogMe
It's the cost difference between them though is'nt it?. 1 Iwaki20RZT will cost me £165 in the UK, I could mod two1250 Eheims an run them parallel for under £90!. three of them would surpass the Iwaki for £135!.
Here in Canada it costs about the same for one MD-20-RZT (~$222) as it does for two Eheim 1250s (2 x $120). Sure, the three Eheim 1250s in series may surpass the Iwaki for maximum head rating, but only if the gain in head from the dual outlet modification was able to completely negate the flow resistance generated from the pumps being connected in series (and then some). However, the Iwaki still wins on maximum flow rate, since it's smaller than for the Eheims (2.9gpm versus 5.28gpm), which means you aren't pissing away pressure by trying for unrealistic flow rates. Add into that the increased potential for leaks, and, well...

Like I said before. I am not trying to rain on Volenti's parade. It's a great and creative project, and I am thrilled to see him succeed. However, much like overclocking, better performance can be had by spending just a tad more money in the first place. Volenti, if you're reading this, please don't think I'm picking on you too much...
__________________
Michael E. Robbins
M.A.Sc. Candidate, University of Toronto

12.1 GHz of AMD's finest (17.7 GHz total) crunching proudly for the AMDMB.com Killer Frogs
SETI BOINC: Dual Opteron 246s (Iwill DK8N) | XP2800+ (Shuttle SN41G2) | 3x XP2400+ (ASUS A7N266-vm)
SETI BOINC: 2x P4 2.8E (ASUS P4R800-vm) | Crunching 24/7
Skulemate is offline   Reply With Quote
Unread 12-02-2002, 03:10 AM   #36
Volenti
Cooling Savant
 
Volenti's Avatar
 
Join Date: Jan 2002
Location: in a nice cool spot
Posts: 427
Default

Quote:
Originally posted by Skulemate

Like I said before. I am not trying to rain on Volenti's parade. It's a great and creative project, and I am thrilled to see him succeed. However, much like overclocking, better performance can be had by spending just a tad more money in the first place. Volenti, if you're reading this, please don't think I'm picking on you too much...
I take no offence, this whole project (and my other projects) wasn't performed for cost reasons, it was an exercise in what could be done, and to further my own knowledge and understanding of how these pumps work in a practical sence.

If I could get an MD-20-RZT locally (or even on-line within australia) I wouldn't have hesitated to get one, and this mod would never had happened.
__________________
feel free to icq/msn me, I'm always willing to toss around ideas.
Volenti is offline   Reply With Quote
Unread 12-02-2002, 03:45 AM   #37
MadDogMe
Thermophile
 
MadDogMe's Avatar
 
Join Date: Aug 2002
Location: Just shut up ;) ...
Posts: 1,068
Default

Quote:
Here in Canada it costs about the same for one MD-20-RZT (~$222) as it does for two Eheim 1250s
Well use a Via then ...

Think of all the people who actualy own pumps that they can now (if they've the initiative) mod to maybe double the head of their pumps.

Tell me Skulemate what kind of pump do you have in your rig?...
MadDogMe is offline   Reply With Quote
Unread 12-02-2002, 07:59 AM   #38
nicozeg
Cooling Savant
 
nicozeg's Avatar
 
Join Date: Sep 2002
Location: Santiago, Chile
Posts: 403
Default

This mod could also take an advantage in pump heat (total wattage) versus head, compared to buying a higher rated pump.
nicozeg is offline   Reply With Quote
Unread 12-02-2002, 11:29 AM   #39
Skulemate
Cooling Savant
 
Skulemate's Avatar
 
Join Date: Jul 2002
Location: Toronto, Canada
Posts: 381
Default

I currently have a Little Giant 3-MD-SC, as it was easily attainable when I built my system. It works quite well, though the flow from it is a bit too high considering its head rating, but for now it's doing the job I suppose. However, I've sourced and priced the Iwaki MD-20-RZT, and I'm planning to make the switch sometime early next year.
__________________
Michael E. Robbins
M.A.Sc. Candidate, University of Toronto

12.1 GHz of AMD's finest (17.7 GHz total) crunching proudly for the AMDMB.com Killer Frogs
SETI BOINC: Dual Opteron 246s (Iwill DK8N) | XP2800+ (Shuttle SN41G2) | 3x XP2400+ (ASUS A7N266-vm)
SETI BOINC: 2x P4 2.8E (ASUS P4R800-vm) | Crunching 24/7
Skulemate is offline   Reply With Quote
Unread 12-02-2002, 11:41 AM   #40
MadDogMe
Thermophile
 
MadDogMe's Avatar
 
Join Date: Aug 2002
Location: Just shut up ;) ...
Posts: 1,068
Default

Numbers were on my side and still I failed ...

Nevermind! ...


I'd like to be able to afford the Iwaki but at £165($250+US!) it's too much, the Eheim was too much @ £45!. I'll wait until I find a way of getting the valves down pat then mod it. if I could gaurentee a good cooling increase over the 1250(modded) I'd save for one, but getting it in a case is daunting as well. I'll just have to wait and pray a cheap one comes my way...
MadDogMe is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 12:54 PM.


Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
(C) 2005 ProCooling.com
If we in some way offend you, insult you or your people, screw your mom, beat up your dad, or poop on your porch... we're sorry... we were probably really drunk...
Oh and dont steal our content bitches! Don't give us a reason to pee in your open car window this summer...